package com.coolweather.android;

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;

import com.coolweather.android.db.City;
import com.coolweather.android.db.County;
import com.coolweather.android.db.Province;


import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.litepal.crud.DataSupport;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class NewCity extends Fragment {
    public static final int LEVEL_PROVINCE=0;
    public static final int LEVEL_CITY=1;
    public static final int LEVEL_COUNTY=2;
    private ProgressDialog progressDialog;
    private TextView titleText;
    private Button backButton;
    private ListView listView;
    private ArrayAdapter<String> adapter;
    private List<String> dataList=new ArrayList<>();
    private List<Province> provinceList;
    private List<City> cityList;
    private List<County> countyList;
    private Province selectedProvince;
    private City selectedCity;
    private int currentLevel;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view=inflater.inflate(R.layout.new_city,container,false);
        titleText=(TextView)view.findViewById(R.id.title_text);
        backButton=(Button)view.findViewById(R.id.back_button);
        listView=(ListView)view.findViewById(R.id.list_view);
        adapter=new ArrayAdapter<>(getContext(),android.R.layout.simple_list_item_1,dataList);
        listView.setAdapter(adapter);
        return view;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                if(currentLevel==LEVEL_PROVINCE){
                    selectedProvince=provinceList.get(i);
                    queryCities();
                }else if (currentLevel==LEVEL_CITY){
                    selectedCity=cityList.get(i);
                    queryCounties();
                }else if(currentLevel==LEVEL_COUNTY){
                    String weatherId=countyList.get(i).getWeatherId();
                    if(getActivity() instanceof MainActivity){
                        Intent intent=new Intent(getActivity(),WeatherActivity.class);
                        intent.putExtra("weather_id",weatherId);
                        startActivity(intent);
                        getActivity().finish();
                    }else if (getActivity() instanceof WeatherActivity){
                        WeatherActivity activity=(WeatherActivity)getActivity();
                        activity.drawerLayout.closeDrawers();
                        activity.swipeRefresh.setRefreshing(true);
                        activity.requestWeather(weatherId);
                    }

                }
            }
        });
        backButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(currentLevel==LEVEL_COUNTY){
                    queryCities();
                }else if (currentLevel==LEVEL_CITY){
                    queryProvinces();
                }
            }
        });
        queryProvinces();
    }

    private void queryProvinces(){
        titleText.setText("天气");
        backButton.setVisibility(View.GONE);
        provinceList = DataSupport.findAll(Province.class);
        if(provinceList.size()>0){
            dataList.clear();
            for(Province province:provinceList){
                dataList.add(province.getProvinceName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel=LEVEL_PROVINCE;
        }else {
            String address="http://guolin.tech/api/china";
            queryFromServer(address,"province");
        }
    }

    private void queryCities(){
        titleText.setText(selectedProvince.getProvinceName());
        backButton.setVisibility(View.VISIBLE);
        cityList = DataSupport.where("provinceid=?",
                String.valueOf(selectedProvince.getProvinceCode())).find(City.class);
        if(cityList.size()>0){
            dataList.clear();
            for(City city:cityList){
                dataList.add(city.getCityName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel=LEVEL_CITY;
        }else {
            int provinceCode=selectedProvince.getProvinceCode();
            String address="http://guolin.tech/api/china/"+provinceCode;
            queryFromServer(address,"city");
        }
    }

    private void queryCounties(){
        titleText.setText(selectedCity.getCityName());
        backButton.setVisibility(View.VISIBLE);
        countyList = DataSupport.where("cityid=?",
                String.valueOf(selectedCity.getCityCode())).find(
                County.class);
        if(countyList.size()>0){
            dataList.clear();
            for (County county:countyList){
                dataList.add(county.getCountyName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel=LEVEL_COUNTY;
        }else {
            int provinceCode=selectedProvince.getProvinceCode();
            int cityCode=selectedCity.getCityCode();
            String address="http://guolin.tech/api/china/"+provinceCode+"/"+cityCode;
            queryFromServer(address,"county");
        }
    }

    private void queryFromServer(String address,final String type){
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    OkHttpClient client = new OkHttpClient();
                    Request request = new Request.Builder().url(address).build();
                    Response response = null;
                    response = client.newCall(request).execute();
                    String responseData = response.body().string();
                    Log.d("responseData", responseData);
                    if ("province".equals(type)) {
                        parseProvinceData(responseData);
                    } else if ("city".equals(type)) {
                        parseCityData(responseData);
                    } else if ("county".equals(type)) {
                        parseCountyData(responseData);
                    }

                } catch (IOException | JSONException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }
    private void parseProvinceData(String responseData) throws JSONException {
        JSONArray allProvinces = new JSONArray(responseData);
        for (int i = 0; i < allProvinces.length(); i++) {
            JSONObject provinceObject = allProvinces.getJSONObject(i);
            String provinceName = provinceObject.getString("name");
            int provinceCode = provinceObject.getInt("id");
            int provinceId = provinceObject.getInt("id");
            Log.d("info", provinceName);
            Province db = new Province();
            db.setProvinceName(provinceName);
            db.setProvinceCode(provinceCode);
            db.setId(provinceId);
            db.save();
        }
    }

    private void parseCityData(String responseData) throws JSONException {
        int provinceCode = selectedProvince.getProvinceCode();
        JSONArray allCity = new JSONArray(responseData);
        for (int i = 0; i < allCity.length(); i++) {
            JSONObject cityObject = allCity.getJSONObject(i);
            String CityName = cityObject.getString("name");
            int CityCode = cityObject.getInt("id");
            int CityId = cityObject.getInt("id");
            City db = new City();
            db.setCityName(CityName);
            db.setCityCode(CityCode);
            db.setProvinceId(provinceCode);
            db.setId(CityId);
            db.save();
        }
    }
    private void parseCountyData(String responseData) throws JSONException {
        int cityCode = selectedCity.getCityCode();
        Log.d("parseCountyData", responseData);
        JSONArray allCounty = new
                JSONArray(responseData);
        for (int i = 0; i < allCounty.length(); i++) {
            JSONObject countyObject =
                    allCounty.getJSONObject(i);
            String CountyName =
                    countyObject.getString("name");
            int Countyid = countyObject.getInt("id");
            String weather_id =
                    countyObject.getString("weather_id");
            County db = new County();
            db.setCityId(cityCode);
            db.setCountyName(CountyName);
            db.setWeatherId(weather_id);
            db.setId(Countyid);
            db.save();
        }
    }
}
